Furnace-wall



D. S. JACOBUS.

FURNACE WALL.

APPLICATION FILED ocT. 9. 1911.

\ Patented Oct. 28, 1919.

2 SHEETS-SHEET l.

I I I 7 M ATTORNEYS.

D. S. JACOBUS.

FURNACE WALL.

APPLICATION FILED OCT- 9,19l7.

Patented Oct. 28, 1919.

2 SHEETS-SHEET 2- INVENTOR.

/ ATTORNEYS.

UNITED STATES PATENT OFFICE.

DAVID. S. J ACOBUS, 0F JERSEY CITY, NEW JERSEY, ASSIGNOR TO THE BABCOCK& WILGOX COMPANY, OF BAYONNE, NEW JERSEY, A CORPORATION OF NEW JERSEY.

FURNACE-WALL.

Patented Oct. 28, 1919.

Application filed October 9, 1917. Serial No. 195,542.

T 0 all whom it may concern:

Be it known that I, Dawn) S. JACOBUS, a citizen of the United States.residing at J ersey City, in the county of Hudson and State of NewJersey, have invented certain new and useful Improvements inFurnace-Walls, of which the following is a specification.

The present invention relates to certain improvements in theconstruction of walls for boiler furnaces and willbe understood byreference to the accompanying drawings, in which Figure 1 is a sideview, partly in section, of one adaptation of the invention; Fig. 2 isan enlarged view of the wall, broken away, of Fig. 1; and Figs. 3 and 4vertical sections of modifications of the arrangement shown in Figs. 1and 2.

Similar reference numerals indicate similar parts in the several views.

In my application Serial No. 90,058 filed April 10, 1916. I havedescribed means for supporting the front wall of a boiler setting wherethe weight of the wall is carried, in part, by struts spaced beneath thewall and at intervals along the front of the stoker so that they do notinterfere with the carrying of a uniform bed of fire from side to sideof the furnace. In that construction I employ special refractory blocksin the wall which interlock with tie pieces to maintain the alinement ofthe wall. According to the present invention the wall is made insections, the lower section being supported on the stoker mechanism andthe upper section on a cross beam. The struts described in my previousapplication may or may not be'used in connection with the presentinvention.

For the purpose of explaining one adaptation of the invention I haveshown in Fig. 1 the front wall of a'setting of a Stirling boiler; thefront bank of tubes 1 of said boiler together with the front steam andwater drum 2 and mud drum, 3 being illustrated. The boiler is shown asfired by an underfeed stoker which comprises the twyer boxes 4: and aledge plate 5, the latter consisting of the top plates of the t-wyerboxes and fuel magazines or retorts.

The front wall is built in two parts or sections, the lower designatedgene ally by the numeral 6 and the upper by the numeral 6'. The weightof the lower section 6 is carried directly by the stoker ledge plate 5and this weight is so reduced that it may not be necessary to employ thesupporting struts described in my application above referred to. Thissection which rests directly on the stoker mechanism is held inalinement by means of the special tile pieces or refractory blocks 7 twocourses of which are shown, and metallic tie pieces 8 having heads 8'which engage grooves or recesses in the blocks as more fully describedin my said application Serial No. 90,058. Near their front ends thetiepieces 8 are formed with projecting lugs 11 and these lugs, at theirupper and lower projecting ends are engaged by a channel iron 9 and aZ-bar 10. respectively. The channel iron 9 is secured to the web of anI-beam 12, and the Z-bar is secured to the base or lower flange of saidbeam as indicated in Fig. 2. The beam 12 is supported in the side wallsof the setting and extends across the space formedby an inset in thelower section of the wall, and is the sole support of the upper section6' of the wall.

The refractory blocks 7 and the metallic tie pieces 8 are arranged toallow the section 6 of the wall to expand upward and sidewise withoutinducing an undue amount of strain, by reason of the expansion of thewall. Holes 13, for ventilation are drilled in the web of the I-beam andthe small amount of air which enters through these holes assists inkeeping cool the cast iron tie pieces and their supports, and also theI- beam.

The upper part of the wall, which is of greater height than the lowerpart, is held in alinement by courses of special tile pieces orrefractory blocks placed in two double rows at 14 and 15, and metallictie pieces 16 similar to the tie pieces 8.

The lower part of the .wall can expand up and down freely, a slidingjoint 17 being provided between it and the upper part of the wall. lessspace at the sliding joint than is indicated in the drawing; in fact thebricks will be laid in close contact and the soot, dust and slag fromthe coal burned on the stoker will seal the joint.

Fig. 3 illustrates a modification in which the special tiles or blocks 7are at a level below the I-beam 12, and the projecting up- In actualconstruction there is.

per and lower ends of the lugs 11 engage angles above and below theblocks which are secured, respectively, to the base or lower flange ofthe I-beam 12 and to the outer metallic casing 18. In this form two rows.of ventilating holes 19 are shown in the I- beam instead of 'a singlerow as in Figs. 1

' and 2, and the cool air is shown as entering one set of holes andleaving the other. There will usually be sufficient leakage at theexpansion joint 17 and through the brick work to cause all of theventilating air to flow inward through the holes. Two rows ofventilating holes 20 are drilled in the casing in front of theprojecting ends of the tie pieces 8. I

In the construction illustrated in Fig. 4, two courses 21 and 22 ofspecial tile pieces or blocks are used at different levels in the wallsection 6. In this form the upper and lower projecting ends of the lugs11 on the tie pieces 8 of the set of tiles 21 engage Z- bars immediatelybelow and above the special tiles, said bars being rigidly secured tothe outer metallic casing 18. The lugs on the tie pieces of the tiles 22engage Z-bars which are rigidly secured to the I-beam 12. Each course ofspecial tiles is independently ventilated by air which flows through theholes 23 and 24.

What I claim and desire to secure by Letters Patent of the United Statesis 1. A furnace comprising a stoker, a wall built in sections one ofwhich sections is supported on the stoker, and a support independent ofthe stoker for the other section, said sections being so arranged thatthere can be relative movement between them to form an expansion joint.

2. A furnace comprising a stoker, a wall built in sections one of whichsections is supported on the stoker, and a support inde pendent of thestoker for the other section, both of said sections having courses withspecial tiles, fixed members, and metallic tie pieces engaging saidtiles and said fixed members to assist in holding the wall in properalinement.

3. A furnace comprising a stoker, a wall built in sections one of whichsections is supported on the stoker, and a support independent of thestoker for the other section, said upper section having courses withspecial tiles, a fixed member and metallic tie pieces engaging saidtiles and said fixed member to assist in holding the wall. in properalinement.

4. A furnace comprising a stoker, a wall built in sections on of whichsections is supported on the stoker, and a cross beam independent of thestoker on which the other section is supported.

5. A furnace comprising a stoker, a wall built in sect-ions one of whichsections is supported on the stoker, a cross beam independent of thestoker on which the other tie pieces being in an inclosed space, and

means for ventilating said space.

7. A furnace comprising a stoker, a wall built in sections, one of whichsections is supported on the stoker, a beam independent of the stokerupon which the upper section of the wall is supported, special tiles inthe lower section, and metallic tie pieces engaging said tiles and saidbeam to assist in maintaining the lower section of the wall inalinement.

8. A furnacecomprising a stoker, a wall built in sections, one of whichsections is supported on the stoker, a beam independent of the stokerupon which the upper section of the wall is supported, special tiles inthe lower section, and metallic tie pieces engaging said tiles and saidbeamto assist in maintaining the lower section of the wall in alinement,the projectin ends of said tie pieces being in an inclosed space, andmeans for ventilating said space to prevent overheating.

9. In a boiler furnace a stoker, a front wall extending across and abovethe stoker, said wall being divided into sections by a horizontallyextending slip joint, and means for supporting the two sectionsindependently of each other, the lower section being supported on thestoker mechanism.

10. In a boiler furnace a stoker, a front Wall extending across andabove the stoker, said wall being divided into sections by ahorizontally extending slip joint, means for supporting the two sectionsindependently of each other, and means for holding the lower section inalinement.

11. In a boiler. furnace a stoker, a front wall extending across andabove the stoker, said wall being divided into sections by ahorizontally extending slip joint, means for supporting the two sectionsindependently of each other, and means exterior to the lower sectionarranged to hold it in alinement.

12. Ina boiler furnace a stoker, a front wall extending across and abovethe stoker, said wall being divided into sections by a horizontallyextending slip joint, means for supporting the two sectionsindependently of each other, and means secured to the supporting meansfor the upper wall section and arranged to hold the lower Wall sectionin alinement.

13. In a boiler furnace a stoker, a front wall extending across andabove the Stoker, said wall having a horizontally extending slip joint,the lower section being supported on the stoker.

14. In a boiler furnace a stoker, a front wall extending across andabove the stoker, said wall having a horizontally extending In testimonywhereof I have hereunto 15 signed my name in the presence of twosubscr1b1ng W1tnesses.

DAVID S. JACOBUS.

Witnesses:

J. H. KING, JOHN A. W. DIXON.

